For the first time, the state Department of Public Health has released to the public details about how many children at each school in the state are vaccinated.

Connecticut has one of the highest immunization rates in the country. According to figures from DPH, 98.2% of kindergarteners and seventh graders were immunized in the 2017-2018 school year. But more and more, Connecticut parents are opting out of vaccinating their children using the religious exemption statute in Connecticut law. According to the DPH, in 2018 1,255 unvaccinated children were allowed to attend public school in Connecticut under the religious exemption law, compared to 912 in the 2012-2013 school year.

DPH has always kept numbers on unvaccinated children, but has only publicly released them on the statewide and county level. On Friday, DPH made public for the first time vaccination rates for every public or private school in the state that has more than 30 students.

In a letter to school superintendents, medical advisors, school nurses and supervisors, DPH commissioner Renée D. Coleman-Mitchell said the reason for the school-level data is two-fold. First, the information can be used by DPH to focus on communities with unusually high numbers of unvaccinated children.

Coleman-Mitchell wrote that the findings “may lead to increased engagement and focus on increasing immunization rates to reduce the risk of vaccine-preventable diseases.”

Secondly, Coleman-Mitchell said releasing school-level information will be helpful for parents, especially for the parents of children who are not vaccinated because of a weakened immune system due to illness or chemotherapy. Those students are particularly vulnerable to the measles, especially in a school with a higher than usual number of unvaccinated children.

Coleman-Mitchell wrote, “consequently, this information bears special importance to the parents of such children, who may wish to access information about their child’s school vaccination rates for their child’s protection.”

DPH said the data does not include information about individual students.

There have been over 700 confirmed measles cases in the U.S. so far this year, including three in Connecticut. It is the worst year for measles since it was eliminated from the U.S. 19 years ago.

If you take the long view, international health organizations have much to be encouraged about when it comes to the global fight against measles. From 2000 to 2017, for instance, the annual number of measles-related deaths dropped 80 percent — from a toll of over half a million to just under 110,000 last year.